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#203747 - 2011-11-16 04:52 PM

Is there an opposite to CreateObject() ?

ShaneEP Offline

MM club member

Registered: 2002-11-29
Posts: 2127
Loc: Tulsa, OK

This is an old problem that I've managed to work around using getfileversion(), but just out of curiosity does anybody know how to release an object once it's created? I expected a simple $system = 0 to do the trick, but the file lock remains. Is it expected behavior for object creation, or is it just kixforms?

In the below example, I can never replace kixforms.dll because the file remains locked.

Code:

$System = CreateObject("Kixtart.Form")

if CompareVerString($System.Version, "2.47.5.1") = 1
   $System = 0
   $oldkf = ReadValue("HKEY_CLASSES_ROOT\CLSID\"+ReadValue("HKEY_CLASSES_ROOT\Kixtart.System\CLSID","")+"\InprocServer32","")
   Copy @ScriptDir+"\kixforms.dll" $oldkf
? @Error
? @SError
   $System = CreateObject("Kixtart.System")
endif

get $

Function CompareVerString($_Version1, $_Version2)
  Dim $_X, $_Max
  $_Version1 = Split($_Version1, '.')
  $_Version2 = Split($_Version2, '.')
  $_Max=IIf(UBound($_Version1)>UBound($_Version2),UBound($_Version1),UBound($_Version2))
  ReDim Preserve $_Version1[$_Max]
  ReDim Preserve $_Version2[$_Max]
  For $_X = 0 to $_Max
    Select
     Case CInt($_Version1[$_X]) < CInt($_Version2[$_X])
      $CompareVerString=1  Exit 0
     Case CInt($_Version1[$_X]) > CInt($_Version2[$_X])
      $CompareVerString=-1 Exit 0
    EndSelect
  Next
  Exit 0
EndFunction

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#203748 - 2011-11-16 04:58 PM Re: Is there an opposite to CreateObject() ? [Re: ShaneEP]
Allen Allen KiX Supporter Registered: 2003-04-19 Posts: 4562 Loc: USA	In this case wouldn't you have to unregister the dll, copy the file , and then reregister the dll before it would work? Did you see my post about cdo holding files open with Sendmail UDF?
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#203756 - 2011-11-16 08:11 PM Re: Is there an opposite to CreateObject() ? [Re: Allen]
ShaneEP ShaneEP MM club member Registered: 2002-11-29 Posts: 2127 Loc: Tulsa, OK	Yes, it would need to be re-registered, I just wrote that snippet to demonstrate the file lock problem. But I took a look at your sendmail post. Must not be a kixforms issue.
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#203757 - 2011-11-16 09:29 PM Re: Is there an opposite to CreateObject() ? [Re: ShaneEP]
Allen Allen KiX Supporter Registered: 2003-04-19 Posts: 4562 Loc: USA	Okay... will you try this? Code: $System=Nothing() function Nothing() dim $sc $sc = CreateObject("ScriptControl") $sc.language = "VBScript" $sc.addcode('noth=nothing') $sc.run $nothing=$sc.codeobject.noth endfunction I am trying it now on sendmail.
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#203758 - 2011-11-16 09:37 PM Re: Is there an opposite to CreateObject() ? [Re: Allen]
ShaneEP ShaneEP MM club member Registered: 2002-11-29 Posts: 2127 Loc: Tulsa, OK	I thought about that because of your windows update session post earlier, but I couldn't get it to work with kixforms. I was probably just doing something wrong.
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#203759 - 2011-11-16 09:46 PM Re: Is there an opposite to CreateObject() ? [Re: ShaneEP]
Allen Allen KiX Supporter Registered: 2003-04-19 Posts: 4562 Loc: USA	Fixed the sendmail with this. Hot digity!
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#203763 - 2011-11-16 11:31 PM

Re: Is there an opposite to CreateObject() ? [Re: Allen]

ShaneEP Offline

MM club member

Registered: 2002-11-29
Posts: 2127
Loc: Tulsa, OK

I dont seem to be having as much luck. Can you see something wrong with this? I tried to imitate what you did with sendmail().

Code:

$sc=CreateObject("ScriptControl")
$sc.language = "VBScript"
$sc.addcode('noth=nothing')
$sc.run

$System = CreateObject("Kixtart.Form")

if CompareVerString($System.Version, "2.47.5.1") = 1
   $System=$sc.codeobject.noth
   $oldkf = ReadValue("HKEY_CLASSES_ROOT\CLSID\"+ReadValue("HKEY_CLASSES_ROOT\Kixtart.System\CLSID","")+"\InprocServer32","")
   Copy @ScriptDir+"\kixforms.dll" $oldkf
   ? @Error
   ? @SError
endif

get $

Function CompareVerString($_Version1, $_Version2)
  Dim $_X, $_Max
  $_Version1 = Split($_Version1, '.')
  $_Version2 = Split($_Version2, '.')
  $_Max=IIf(UBound($_Version1)>UBound($_Version2),UBound($_Version1),UBound($_Version2))
  ReDim Preserve $_Version1[$_Max]
  ReDim Preserve $_Version2[$_Max]
  For $_X = 0 to $_Max
    Select
     Case CInt($_Version1[$_X]) < CInt($_Version2[$_X])
      $CompareVerString=1  Exit 0
     Case CInt($_Version1[$_X]) > CInt($_Version2[$_X])
      $CompareVerString=-1 Exit 0
    EndSelect
  Next
  Exit 0
EndFunction

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#203764 - 2011-11-16 11:44 PM Re: Is there an opposite to CreateObject() ? [Re: ShaneEP]
Lonkero Lonkero KiX Master Guru Registered: 2001-06-05 Posts: 22346 Loc: OK	that nothing has nothing to do with nothing. if you want to make a value contain null, you use not 1. if you want the var to contain nothing, you use redim. anyways, setting a var that contains the last object reference to anything else, like zero, WILL and MUST dispose the object and release all hooks. there is something wrong with something if this doesn't happen. and it shouldn't matter how many nothings and nulls you put in place of trashing the object reference, it should always behave the same. that being said, what is the error you get it with? also I would consider there is some windows crap going on, so there might be a need for a delay, after release of the object. _________________________ ! download KiXnet
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#203765 - 2011-11-16 11:51 PM Re: Is there an opposite to CreateObject() ? [Re: Lonkero]
ShaneEP ShaneEP MM club member Registered: 2002-11-29 Posts: 2127 Loc: Tulsa, OK	I assumed the same as you're saying, but it just doesn't. If I run the below test script I get error 32 "The process cannot access the file because it is being used by another process.". Even withe the redim and a 15 second sleep. Code: $System = CreateObject("Kixtart.Form") if $System.Version <> "2.47.5.1" $System = 0 ReDim $System Sleep 15 $oldkf = ReadValue("HKEY_CLASSES_ROOT\CLSID\"+ReadValue("HKEY_CLASSES_ROOT\Kixtart.System\CLSID","")+"\InprocServer32","") Copy @ScriptDir+"\kixforms.dll" $oldkf ? @Error ? @SError endif get $
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#203766 - 2011-11-16 11:55 PM Re: Is there an opposite to CreateObject() ? [Re: ShaneEP]
Allen Allen KiX Supporter Registered: 2003-04-19 Posts: 4562 Loc: USA	Sorry dude, it looks right. Must not be the golden pill. The function should have worked too.
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#203767 - 2011-11-17 12:01 AM Re: Is there an opposite to CreateObject() ? [Re: Allen]
Lonkero Lonkero KiX Master Guru Registered: 2001-06-05 Posts: 22346 Loc: OK	going to test it now with simple trace with: http://technet.microsoft.com/en-us/sysinternals/bb896653 _________________________ ! download KiXnet
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#203768 - 2011-11-17 12:30 AM Re: Is there an opposite to CreateObject() ? [Re: Lonkero]
Lonkero Lonkero KiX Master Guru Registered: 2001-06-05 Posts: 22346 Loc: OK	ok, that didn't work as it didn't show anything $\:o$ _________________________ ! download KiXnet
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#203769 - 2011-11-17 12:39 AM Re: Is there an opposite to CreateObject() ? [Re: Lonkero]
Lonkero Lonkero KiX Master Guru Registered: 2001-06-05 Posts: 22346 Loc: OK	listdlls doesn't show it either. anyways, created a script that loaded a form. before closing it, opened up a command prompt and renamed kixforms.dll to kixforms.old.dll no errors. then in the script window hit a key and let it dispose with $Form = 0 so, even if the form is loaded, kixtart doesn't block it from being renamed. your systems have something else going on! _________________________ ! download KiXnet
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#203770 - 2011-11-17 12:42 AM Re: Is there an opposite to CreateObject() ? [Re: Lonkero]
Lonkero Lonkero KiX Master Guru Registered: 2001-06-05 Posts: 22346 Loc: OK	oh, and weird thing... the form didn't get destroyed with $Form = 0 only after that I had put a redim that destroyed it! so there is some iffy going on after all... Code: $F = CreateObject("Kixtart.Form") @error ? $F.show "pausing start. see if dll shows up loaded. continue after." get $ cls ? $SF = 0 "pausing release. see if dll shows up loaded. continue after." get $ cls ?? ReDim $F "pausing redim. see if dll shows up loaded. quit after." get $ _________________________ ! download KiXnet
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#203771 - 2011-11-17 12:58 AM Re: Is there an opposite to CreateObject() ? [Re: Lonkero]
ShaneEP ShaneEP MM club member Registered: 2002-11-29 Posts: 2127 Loc: Tulsa, OK	$SF = 0 should be $F = 0 ?
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#203772 - 2011-11-17 01:09 AM Re: Is there an opposite to CreateObject() ? [Re: ShaneEP]
Lonkero Lonkero KiX Master Guru Registered: 2001-06-05 Posts: 22346 Loc: OK	lol, yea. thanks for having better eyes today $\:\)$ and indeed, setting to 0 does destroy the hook, just like it should. and, like already said, even when kixforms is in use, it is still able to be renamed. _________________________ ! download KiXnet
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#203773 - 2011-11-17 02:38 AM Re: Is there an opposite to CreateObject() ? [Re: Lonkero]
Allen Allen KiX Supporter Registered: 2003-04-19 Posts: 4562 Loc: USA	Guess I got carried away with the scriptcontrol... Quote: if you want to make a value contain null, you use not 1. I just tried that, and it returned boolean. Cleaned up my code in the Sendmail to just use a dimmed, but unused var called $Empty, and it worked like a charm. I'm sure the redim would have worked as well.
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#203774 - 2011-11-17 03:12 AM Re: Is there an opposite to CreateObject() ? [Re: Allen]
Lonkero Lonkero KiX Master Guru Registered: 2001-06-05 Posts: 22346 Loc: OK	yea, boolean false... my head just doesn't work today... _________________________ ! download KiXnet
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#203783 - 2011-11-17 08:43 PM Re: Is there an opposite to CreateObject() ? [Re: Lonkero]
ShaneEP ShaneEP MM club member Registered: 2002-11-29 Posts: 2127 Loc: Tulsa, OK	Weird. You're right, once I set it to 0 or redim it, I can indeed rename it and unregister/re-register...but the straight Copy still gives an error.
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#203784 - 2011-11-17 08:44 PM Re: Is there an opposite to CreateObject() ? [Re: ShaneEP]
ShaneEP ShaneEP MM club member Registered: 2002-11-29 Posts: 2127 Loc: Tulsa, OK	So I guess it was just the copy/replace that was the problem.
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